CVE-2024-37947
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Tutor LMS WordPress plugin allows attackers to inject malicious scripts into web pages. When users view affected pages, the scripts execute in their browsers, potentially stealing credentials or performing unauthorized actions. All Tutor LMS installations up to version 2.7.2 are affected.
💻 Affected Systems
- WordPress Tutor LMS Plugin
📦 What is this software?
Tutor Lms by Themeum
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, hijack user sessions, deface websites, or redirect users to malicious sites, potentially leading to complete site compromise.
Likely Case
Attackers inject malicious scripts that steal user session cookies or credentials, allowing account takeover and unauthorized access to sensitive LMS data.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users, preventing execution.
🎯 Exploit Status
Stored XSS vulnerabilities are commonly exploited. While no public PoC is confirmed, the vulnerability type is well-understood and easily weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.7.3 or later
Vendor Advisory: https://patchstack.com/database/vulnerability/tutor/wordpress-tutor-lms-plugin-2-7-2-cross-site-scripting-xss-vulnerability
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Tutor LMS and click 'Update Now'. 4. Verify update to version 2.7.3 or higher.
🔧 Temporary Workarounds
Input Sanitization Filter
allAdd custom input sanitization for Tutor LMS fields to strip script tags and malicious content
Add WordPress filter: add_filter('tutor_sanitize_input', 'custom_sanitize_function');
Content Security Policy
allImplement CSP headers to restrict script execution sources
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Or use WordPress CSP plugin
🧯 If You Can't Patch
- Disable Tutor LMS plugin temporarily until patching is possible
- Implement web application firewall (WAF) rules to block XSS payloads in Tutor LMS requests
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Tutor LMS → Version. If version is 2.7.2 or lower, system is vulnerable.Check Version:
wp plugin list --name=tutor --field=version (if WP-CLI installed) or check WordPress admin panelVerify Fix Applied:
After update, verify Tutor LMS version shows 2.7.3 or higher in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to Tutor LMS endpoints containing script tags or JavaScript
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests with suspicious parameters like <script>, javascript:, or encoded payloads to Tutor LMS URLs
SIEM Query:
source="web_server_logs" AND (uri_path="*tutor*" AND (request_body="*<script>*" OR request_body="*javascript:*"))